ISO 900-1977 主要用于铝生产的氧化铝 钛含量的测定 二安替吡啉基代甲烷光度法

标准号：ISO 900-1977
中文标准名称：主要用于铝生产的氧化铝 钛含量的测定 二安替吡啉基代甲烷光度法
英文标准名称：Aluminium oxide primarily used for the production of aluminium; Determination of titanium content; Diantipyrylmethane photometric method
标准类型：G10
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：G10
国际标准分类号：71.100.10
适用范围：Applicable to all products having a titanium dioxide content of equal to or more than 0.001 % (m/m). Describes the preparation of the diantipyrylmethane solution and the preparation of the titanum standard solution. The procedure of the preparation of a principal solution or the chemical analysis by an alkaline fusion is carried out according to ISO 804 replacing the nitric acid solution by the sulphuric one. After extraction of the fused mass with sulphuric acid solution formation of the titanium-diantipyrylmethane complex (approximately 4.6 N solution). Photometric measurement of the coloured complex at a wavelength of about 420 nm. Has also been approved by the IUPAC. Replaces and cancels ISO Recommendation R 900/1968 of which it constitutes a technical revision.